Question

Look at the chemical equation below: 4Fe+3O₂----> ___ Fe₂O₃

The products in this equation are not balanced. How many molecules of Fe₂O₃ are needed to balance this equation?

Answer 1

Step-by-step explanation:

On the reactants side, we have:

4 iron

6 oxygen

On the products side, we have:

2 iron

3 oxygen.

This is now pretty easy, as it is clear that the reactants = 2×products

Thus, we need 2Fe₂O₃ to balance the equation